I tried it this weekend, i might have done it wrong because all i had was a massive tire spin as opposed to a nice acceleration

I know exactly what happened because it's happened to me many times while practicing.

You can't just floor the accelerator - you have to floor it and push past a little "click" (or detent that people are calling it) AND keep that button down during the launch. If you lift off the little "click" at any time, that turns off LC and essentially you're just flooring it DSC. You'll go sideways in no time! I highly NOT recommend using LC if you haven't gotten this down. You can easily high the guy next to you!

I'm not sure if this has been brought up but according to the manual, the car has to be driven for 6 miles straight before LC works. Maybe the people having the issue with it not working, this might be the issue but just throwing it out there. I have yet to try it, kinda of scare, lol